<template>
  <div class="echarts-wall" :style="echartsStyle">
    <div class="dot-bg" v-if="loading"></div>
    <div class="dot-elastic dotClass" v-if="loading"></div>
    <div class="echarts-content" ref="echartsDom"></div>
  </div>
</template>

<script lang="ts" setup>
//支持3D 饼状图 和 环状图
// @ts-ignore
import {getCurrentInstance, onMounted, ref} from "vue";
// @ts-ignore
import screenConfig from "@/components/global/bigscreen/screen_config";

defineOptions({
  name: "Echarts3DPie"
});


const echartsStyle = ref<any>({});

const loading = ref<boolean>(false);

const props = defineProps({
  height: {type: Number, default: 200},
  isSplit: {type: Boolean, default: false},
  autoMove: {type: Boolean, default: false},
  pieRate: {type: Number, default: 0.56},
  //显示legend
  legendShow: {type: Boolean, default: false},
  legendOrient: {type: String, default: 'vertical'},//vertical
  legendLeft: {type: String, default: 'left'},//vertical
  color: {
    type: Array, default: function () {
      return ['#f77b66', '#3edce0', '#f94e76', '#018ef1', '#9e60f9', '#a5673f', '#8799a3', '#f0f0f0', '#CCCC99', '#FFCC33']
    }
  },
  url: {
    type: String, default: ''
  },
  params: {
    type: Object, default: {}
  }
});
const tooltip = (i: number) => {
  let formatter = '{b} : {c}';
  if (i > 1) {
    formatter = '';
  }
  return {
    show: true,
    trigger: 'item', //axis , item
    backgroundColor: 'RGBA(0, 49, 85, 1)',
    borderColor: 'rgba(0, 151, 251, 1)',
    borderWidth: 1,
    borderRadius: 0,
    textStyle: {
      color: '#BCE9FC',
      fontSize: 16,
      align: 'left',
    },
    formatter,

  }
}

// 生成扇形的曲面参数方程，用于 series-surface.parametricEquation
function getParametricEquation(startRatio: any, endRatio: any, isSelected: any, isHovered: any, k: any, h: any) {
  // 计算
  let midRatio = (startRatio + endRatio) / 2;

  let startRadian = startRatio * Math.PI * 2;
  let endRadian = endRatio * Math.PI * 2;
  let midRadian = midRatio * Math.PI * 2;
  isSelected = props.isSplit;
  // 通过扇形内径/外径的值，换算出辅助参数 k（默认值 1/3）
  k = typeof k !== 'undefined' ? k : 1 / 3;

  // 计算选中效果分别在 x 轴、y 轴方向上的位移（未选中，则位移均为 0）
  let offsetX = isSelected ? Math.sin(midRadian) * 0.1 : 0;
  let offsetY = isSelected ? Math.cos(midRadian) * 0.1 : 0;

  // 计算高亮效果的放大比例（未高亮，则比例为 1）
  let hoverRate = isHovered ? 1.05 : 1;

  // 返回曲面参数方程
  return {
    u: {
      min: -Math.PI,
      max: Math.PI * 3,
      step: Math.PI / 32,
    },

    v: {
      min: 0,
      max: Math.PI * 2,
      step: Math.PI / 20,
    },

    x: function (u: any, v: any) {
      if (u < startRadian) {
        return offsetX + Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate;
      }
      if (u > endRadian) {
        return offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate;
      }
      return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate;
    },

    y: function (u: any, v: any) {
      if (u < startRadian) {
        return offsetY + Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate;
      }
      if (u > endRadian) {
        return offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate;
      }
      return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate;
    },

    z: function (u: any, v: any) {
      if (u < -Math.PI * 0.5) {
        return Math.sin(u);
      }
      if (u > Math.PI * 2.5) {
        return Math.sin(u) * h * 0.1;
      }
      return Math.sin(v) > 0 ? 1 * h * 0.1 : -1;
    },
  };
}

const legend = () => {
  return {
    show: props.legendShow,
    orient: props.legendOrient,
    left: props.legendLeft,
    textStyle: {
      fontSize: screenConfig.legendFontSize,
      fontFamily: screenConfig.legendFontFamily,
      color: screenConfig.legendFontColor,
    },
  }
}

// 生成模拟 3D 饼图的配置项
function getPie3D(pieData: any, internalDiameterRatio: number) {
  let series = [];
  let sumValue = 0;
  let startValue = 0;
  let endValue = 0;
  let legendData = [];
  let k =
      typeof internalDiameterRatio !== 'undefined'
          ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio)
          : 1 / 3;

  // 为每一个饼图数据，生成一个 series-surface 配置
  for (let i = 0; i < pieData.length; i++) {
    sumValue += pieData[i].value;

    let seriesItem: any = {
      name: typeof pieData[i].name === 'undefined' ? `series${i}` : pieData[i].name,
      type: 'surface',
      parametric: true,
      wireframe: {
        show: false,
      },
      pieData: pieData[i],
      pieStatus: {
        selected: false,
        hovered: false,
        k: 1 / 10,
      },
    };

    if (typeof pieData[i].itemStyle != 'undefined') {
      let itemStyle: any = {};

      typeof pieData[i].itemStyle.color != 'undefined' ? (itemStyle.color = pieData[i].itemStyle.color) : (itemStyle.color = props.color[i]);
      typeof pieData[i].itemStyle.opacity != 'undefined'
          ? (itemStyle.opacity = pieData[i].itemStyle.opacity)
          : null;

      seriesItem.itemStyle = itemStyle;
    }
    series.push(seriesItem);
  }

  // 使用上一次遍历时，计算出的数据和 sumValue，调用 getParametricEquation 函数，
  // 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation，也就是实现每一个扇形。
  for (let i = 0; i < series.length; i++) {
    endValue = startValue + series[i].pieData.value;

    series[i].pieData.startRatio = startValue / sumValue;
    series[i].pieData.endRatio = endValue / sumValue;
    series[i].parametricEquation = getParametricEquation(
        series[i].pieData.startRatio,
        series[i].pieData.endRatio,
        props.isSplit,
        false,
        k,
        props.height
    );

    startValue = endValue;

    legendData.push(series[i].name);
  }

  // 准备待返回的配置项，把准备好的 legendData、series 传入。
  let option = {
    //animation: false,
    legend: legend(),
    tooltip: {
      formatter: (params: any) => {
        if (params.seriesName !== 'mouseoutSeries') {
          return `${params.seriesName}<br/><span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>${option.series[params.seriesIndex].pieData.value}`;
        }
      }
    },
    xAxis3D: {},
    yAxis3D: {},
    zAxis3D: {},
    grid3D: {
      show: false,
      boxHeight: 10,
      viewControl: {//3d效果可以放大、旋转等，请自己去查看官方配置
        alpha: 40,
        //  beta: 40,
        rotateSensitivity: 0,
        zoomSensitivity: 0,
        panSensitivity: 0,
        autoRotate: props.autoMove
      },
      //后处理特效可以为画面添加高光、景深、环境光遮蔽（SSAO）、调色等效果。可以让整个画面更富有质感。
      postEffect: {//配置这项会出现锯齿，请自己去查看官方配置有办法解决
        enable: false,
        bloom: {
          enable: true,
          bloomIntensity: 0.1
        },
        SSAO: {
          enable: true,
          quality: 'medium',
          radius: 2
        }
      }
    },
    series: series,
  };
  return option;
}


// @ts-ignore
let {proxy} = getCurrentInstance()

// dom 组件
const echartsDom = ref<any>(null);
//
let myEcharts: any = null;

onMounted(() => {
  myEcharts = proxy.$echarts.init(echartsDom.value);

  getData().then((option: any) => {
    if (myEcharts) {
      myEcharts.clear();
      myEcharts.setOption(option)
    }
  })
})

const getData = () => {
  return new Promise((resolve, reject) => {
    proxy.$http.post(props.url, props.params)
        .then((apiResponse: any) => {
          if (apiResponse.success || apiResponse.data) {
            let echartsData = apiResponse.data.echartsData;
            let i = 0;
            let searData: any = [];
            Object.keys(echartsData).forEach((key: string) => {
              if (i === 0) {
                searData = echartsData[key];
              }
            })
            let option: any = getPie3D(searData, props.pieRate);
            resolve(option);
          }
        }).catch((err: any) => {
      reject(err)
    });
  });
}
</script>

<style scoped>

</style>